EP 1249834 A2 20021016 - Information recording with effective pulse control scheme
Title (en)
Information recording with effective pulse control scheme
Title (de)
Informationsaufzeichnung mit wirksamen Pulssteuerungsschema
Title (fr)
Enregistrement d'informations avec schéma de régulation efficace d'impulsions
Publication
Application
Priority
- JP 2001113459 A 20010412
- JP 2001135211 A 20010502
- JP 2001287272 A 20010920
Abstract (en)
An input bit sequence is converted into a corresponding light emission waveform having heating and cooling pulses of respective intervals such that the sum of the intervals lies in a range of 1.5T-3T where T is a preset bit period of the input bit sequence. A beam with the obtained waveform is applied onto a recording medium. An independent claim is included for information recording device.
IPC 1-7
IPC 8 full level
G11B 7/0045 (2006.01); G11B 7/006 (2006.01); G11B 7/125 (2006.01)
CPC (source: EP US)
G11B 7/00456 (2013.01 - EP US); G11B 7/0062 (2013.01 - EP US); G11B 7/126 (2013.01 - EP US)
Citation (applicant)
JP H09134525 A 19970520 - RICOH KK
Designated contracting state (EPC)
DE FR GB
DOCDB simple family (publication)
EP 1249834 A2 20021016; EP 1249834 A3 20050504; EP 1249834 B1 20120912; US 2002196324 A1 20021226; US 6801240 B2 20041005
DOCDB simple family (application)
EP 02252572 A 20020410; US 11919302 A 20020410